Balance Sheet Details - PPE (Details) - USD ($) $ in Millions	3 Months Ended
Jan. 31, 2017	Oct. 31, 2016
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 21,805	$ 21,745
Accumulated depreciation	(12,308)	(12,109)
Total	9,497	9,636
Purchase of property, plant and equipment	724
Sales and retirements of PP&E	737
Currency impacts on gross property, plant and equipment	18
Accumulated depreciation on sale and retirement of property, plant and equipment	607
Land
Property, Plant and Equipment, Net
Property, plant and equipment, gross	498	497
Buildings and leasehold improvements
Property, Plant and Equipment, Net
Property, plant and equipment, gross	6,977	6,948
Machinery and equipment, including equipment held for lease
Property, Plant and Equipment, Net
Property, plant and equipment, gross	14,330	$ 14,300
SGI
Property, Plant and Equipment, Net
Acquisition	$ 93

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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